Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE46861 | Crash attenuator | Michael J. Buehler, Brent S. Sindorf | 2018-05-22 |
| 8464825 | Crash attenuator | Michael J. Buehler, Brent S. Sindorf | 2013-06-18 |
| 8074761 | Crash attenuator | Michael J. Buehler, Brent S. Sindorf | 2011-12-13 |
| 5425594 | Roadside barrier | William G. Krage, Jeffrey M. Thompson, James B. Welch | 1995-06-20 |
| 5192157 | Vehicle crash barrier | — | 1993-03-09 |
| 5112028 | Roadway impact attenuator | — | 1992-05-12 |